I needed to chance my ViewControllers, so I used this function:
(void)pushViewFromRight:(UIViewController*)coming over:(UIViewController*)going {
CGRect frameComing = coming.view.frame;
CGRect frameGoing = going.view.frame;
frameComing.origin.x = 0;
frameComing.origin.y = -460;
coming.view.frame = frameComing;
if ([coming.view superview] == nil)
[SlideContainer addSubview:coming.view];
[UIView beginAnimations:#"frame" context:nil];
[UIView setAnimationDuration:1];
[coming viewWillAppear:YES];
[going viewWillAppear:YES];
frameComing.origin.y = 0;
coming.view.frame = frameComing;
going.view.frame = frameGoing;
[going viewDidDisappear:YES];
[coming viewDidAppear:YES];
[UIView commitAnimations];
}
On the Second ViewController I created a button to go back.
But when I want to go back, (even if there are no actions after pressing the button), it crashes with EXC_BAD_ACCESS.
Why does this happen?
Related
I tried everything, but everytime its the same problem:
i want to move a button for y = 276. when the animation ends, my buttons jumps back to the startposition, but i want that the endanimationposition is the new position, and the button has to stay there, until a new animation is called.
tried with
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:1];
CGPoint p = _cell00.center;
p.x += 100;
_cell00.center = p;
[UIView commitAnimations];
[UIView beginAnimations:nil context:nil];
same issue like
[UIView animateWithDuration:1.0 animations:^{
_cell00.frame = CGRectOffset(_cell00.frame, 0, 20);
}];
or
[UIView animateWithDuration:0.5 animations:^{
_cell00.center = CGPointMake(0, 20.0);
}];
EDIT:
I call this Animation with my Button called statisticsBUttonPressed.
- (IBAction)statisticsButtonPressed:(id)sender {
if (statOrGame == 0) {
statOrGame = 1;
}else {
statOrGame = 0;
}
NSLog(#"statOrGame? %d", statOrGame);
[self animateView:(UIButton *)sender];
}
-(void) animateView:(UIButton *)sender {
sender.userInteractionEnabled = NO;
if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPhone)
{ // The iOS device = iPhone or iPod Touch
NSLog(#"IS IPHONE 5");
CGSize iOSDeviceScreenSize = [[UIScreen mainScreen] bounds].size;
if (iOSDeviceScreenSize.height == 568)
{
if (statOrGame) {
[UIView animateWithDuration:1.0 animations:^{
_cell00.frame = CGRectOffset(_cell00.frame, 0, 20);
}];
}
}
}
}
The problem is that you're using auto layout. You can't (just) change the frame of a view that is positioned by auto layout, because what positions the view is its constraints. You need to change the constraints. You can do this at the end of the animation, or you can simply animate the change of constraints.
I try to create a pseudo-animation, when a view will appear. Here is my code:
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
_image1.hidden = NO;
sleep(1);
_label1.hidden = YES;
sleep(1);
_image2.hidden = NO;
sleep(1);
_label2.hidden = YES;
sleep(1);
}
But the view is not updated before each sleep(). What does I have to add, that the view will be updated after I show or hide a image or label?
Try this:
[_image1 performSelector:#selector(setHidden:) withObject:[NSNumber numberWithBool:true] afterDelay:1];
[_label1 performSelector:#selector(setHidden:) withObject:[NSNumber numberWithBool:false] afterDelay:2];
[_image2 performSelector:#selector(setHidden:) withObject:[NSNumber numberWithBool:true] afterDelay:3];
[_label2 performSelector:#selector(setHidden:) withObject:[NSNumber numberWithBool:false] afterDelay:4];
You can't use sleep because it stops your current thread and will prevent your app from updating the display.
I recommend to use...
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.5]; // you can also set this to 0.0
[UIView setAnimationDelay:1.0]; // the delay
// your changes which should be animated, example:
_image1.alpha = 0.0;
[UIView commitAnimations];
simple and extendable.
I have a little problem with my UIPickerView animation.
I did set up the animation so when I click a button the UIPickerView will slide up and after another click it will slide down. But I hit the problem on if. I tried to set up a new settings bool and set it's value after each animation, so the if was just checking for the bool. I'm not sure if I did explained it well, but maybe you get the idea from the code.
But unfortunately it's not working... Any ideas?
- (void)viewDidLoad
{
[super viewDidLoad];
settings = [NSUserDefaults standardUserDefaults];
[settings setBool:NO forKey:#"pickerShown"];
[settings synchronize];
}
- (IBAction)showPicker:(id)sender {
CGRect rect = countryPicker.frame;
CGPoint origin = CGPointMake(0, 510); // Some off-screen y-offset here.
rect.origin = origin;
countryPicker.frame = rect;
if ([settings boolForKey:#"pickerShown"] == YES) {
// Perform transform to slide it off the screen.
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.5];
countryPicker.transform = CGAffineTransformMakeTranslation(0, -0); // Offset.
[UIView commitAnimations];
[settings setBool:NO forKey:#"pickerShown"];
[settings synchronize];
} else if ([settings boolForKey:#"pickerShown"] == NO) {
// Perform transform to slide it onto the screen.
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.5];
countryPicker.transform = CGAffineTransformMakeTranslation(0, -266); // Offset.
[UIView commitAnimations];
[settings setBool:YES forKey:#"pickerShown"];
[settings synchronize];
}
}
EDIT:
Just found the solution...
If anyone's interested - here it is:
The h. file:
.
.
.
{
BOOL pickerShown;
}
.
.
.
The .m file:
- (void)viewDidLoad
{
[super viewDidLoad];
CGRect rect = countryPicker.frame;
CGPoint origin = CGPointMake(0, 510); // Some off-screen y-offset here.
rect.origin = origin;
countryPicker.frame = rect;
pickerShown = NO;
}
- (IBAction)showPicker:(id)sender {
if (pickerShown == NO) {
// Perform transform to slide it onto the screen.
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1];
//[UIView setAnimationDidStopSelector:#selector(hidePicker)];
countryPicker.transform = CGAffineTransformMakeTranslation(0, 0); // Offset.
[UIView commitAnimations];
[self performSelector:#selector(hidePicker) withObject:nil afterDelay:1];
} else if (pickerShown == YES) {
//countryPicker.hidden = NO;
// Perform transform to slide it onto the screen.
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1];
countryPicker.transform = CGAffineTransformMakeTranslation(0, -266); // Offset.
[UIView commitAnimations];
countryPicker.hidden = NO;
}
}
If a view is visible on screen, it's window property will be non-nil.
Just found the solution... If anyone's interested - here it is:
The h. file:
.
.
.
{
BOOL pickerShown;
}
.
.
.
The .m file:
- (void)viewDidLoad
{
[super viewDidLoad];
CGRect rect = countryPicker.frame;
CGPoint origin = CGPointMake(0, 510); // Some off-screen y-offset here.
rect.origin = origin;
countryPicker.frame = rect;
pickerShown = NO;
}
- (IBAction)showPicker:(id)sender {
if (pickerShown == NO) {
// Perform transform to slide it onto the screen.
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1];
//[UIView setAnimationDidStopSelector:#selector(hidePicker)];
countryPicker.transform = CGAffineTransformMakeTranslation(0, 0); // Offset.
[UIView commitAnimations];
[self performSelector:#selector(hidePicker) withObject:nil afterDelay:1];
} else if (pickerShown == YES) {
//countryPicker.hidden = NO;
// Perform transform to slide it onto the screen.
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1];
countryPicker.transform = CGAffineTransformMakeTranslation(0, -266); // Offset.
[UIView commitAnimations];
countryPicker.hidden = NO;
}
}
You can check it with:
self.countryPicker.superview
If picker is hidden then superview will be nil. Otherwise it will be containing view.
If all you want is the basic effect of displaying the picker view, then removing it again there is an easier way.
pseudocode:
//do any picker initialization here
if(!pickerIsShowing)
[self.view addSubview:yourPickerView];
else
[self.yourPickerView removeFromSuperView];
hi
when certain events occur, I call a number of methods (unlocked trophies in a game) they do appear and disappear a sub-view.
Crash (rightly) occurs when these events occur simultaneously and overlap.
How do I make sure that " wait your turn :) "?
thanks
-(void)trofeiLaunch:(int)x {
CGRect loseFrame = CGRectMake(0, 0, 480, 320);
TrofeoView = [[UIView alloc] initWithFrame:loseFrame];
TrofeoView.alpha = 0.0;
[UIView beginAnimations:nil context:self];
[UIView setAnimationCurve:UIViewAnimationCurveEaseOut];
[UIView setAnimationDuration:0.5];
[UIImageView setAnimationDelegate:self];
TrofeoView.alpha = 1.0;
[UIView setAnimationDidStopSelector:#selector(bridgeTrofei)];
[UIView commitAnimations];
[self.view addSubview:TrofeoView];
[TrofeoView release];
....
}
-(void)bridgeTrofei {
TrofeoView.alpha = 1.0;
[UIView beginAnimations:nil context:self];
[UIView setAnimationCurve:UIViewAnimationCurveEaseOut];
[UIView setAnimationDuration:0.5];
[UIView setAnimationDelegate:self];
TrofeoView.alpha = 0.0;
[UIView commitAnimations];
[self performSelector:#selector(deleteTrofei) withObject:self afterDelay:1.0];
}
-(void)deleteTrofei {
[TrofeoView removeFromSuperview];
NSLog(#"delete");
}
Crash (rightly) occurs when these events occur simultaneously and overlap.
How do I make sure that " wait your turn :) "?
thanks
If the second animation starts before the first animation is complete, TrofeoView will get reassigned and you will lose the earlier reference. You also flout memory management rules when you release TrofeoView in 'trofeiLaunch:` method. You use this variable again later with having taken ownership. You should only release an object if you are done with it which you are not.
I think the most important thing going down this path is to make sure that three methods refer to the correct object. First one is ok by default so you need to handle the next two. I have modified your code to do that.
- (IBAction)start {
animatingView = [[UIView alloc] initWithFrame:CGRectMake(100, 100, 200, 200)];
animatingView.backgroundColor = [UIColor greenColor];
animatingView.alpha = 0.0;
[UIView beginAnimations:#"Trophy Display" context:animatingView];
[UIView setAnimationCurve:UIViewAnimationCurveEaseOut];
[UIView setAnimationDuration:0.5];
[UIImageView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector:#selector(animationDidStop:finished:context:)];
animatingView.alpha = 1.0;
[UIView commitAnimations];
[self.window addSubview:animatingView];
}
- (void)animationDidStop:(NSString*)animationID finished:(NSNumber*)finished context:(void *)context {
if ( [animationID isEqualToString:#"Trophy Display"] ) {
UIView *aView = (UIView *)context;
[UIView beginAnimations:nil context:aView];
[UIView setAnimationCurve:UIViewAnimationCurveEaseOut];
[UIView setAnimationDuration:0.5];
[UIView setAnimationDelegate:self];
aView.alpha = 0.0;
[UIView commitAnimations];
[self performSelector:#selector(finishAnimation:) withObject:aView afterDelay:1.0];
}
}
- (void)finishAnimation:(UIView*)aView {
[aView removeFromSuperview];
[aView release];
}
I pass the view via context to the second method and withObject: part to the third method. I am hoping the code is self explanatory. Let me know if you don't get this.
Next point is about whether this is the right way. Can't you manage this using an array? Push only if there is no view in display.
i'm doing an ipad application, in which i have say two views
mainview and aboutus view
on startup i put the mainview in the rootcontroller's view (the one that is added to the window) alone.
and there's a button on mainview, that, when pressed, will remove the mainview from superview and put the aboutusview instead. aboutus has a similar button that gets us back to mainview.
Now the problem lies in the rotation (orientation).
when i detect an orientation change, i update the displayed view. works fine. (for mainview and aboutusview)
But if i rotate once any view, and then then try to see the second view. it seems that the second view is not autosizing.
CODE in rootViewController:
- (void)viewDidLoad
{
[super viewDidLoad];
_currentOrientation=UIDeviceOrientationPortrait;
[self.view addSubview:_mainView];
[_splashView removeFromSuperview];
}
-(void)viewDidAppear:(BOOL)animated
{
_currentView = _mainView;
}
-(void)toggleMainPage
{
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:.5];
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:[self view] cache:YES];
[_infoView removeFromSuperview];
[self.view addSubview:_mainView];
_currentView=_mainView;
[self transformViewAccordingToOrientation:_currentOrientation];
[UIView commitAnimations];
}
-(void)toggleAboutPage
{
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:.5];
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:[self view] cache:YES];
[_mainView removeFromSuperview];
[self.view addSubview:_infoView];
_currentView=_infoView;
[self transformViewAccordingToOrientation:_currentOrientation];
[UIView commitAnimations];
}
-(void) transformViewAccordingToOrientation:(UIDeviceOrientation)toInterfaceOrientation
{
if(toInterfaceOrientation == UIDeviceOrientationPortrait)
{
[_mainBtnCustom setBackgroundImage:[UIImage imageNamed:#"main.png"] forState:UIControlStateNormal];
_infoImage.image = [UIImage imageNamed:#"about.png"];
}else
{
[_mainBtnCustom setBackgroundImage:[UIImage imageNamed:#"mainr.png"] forState:UIControlStateNormal];
_infoImage.image = [UIImage imageNamed:#"aboutr.png"];
}
}
- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{
[self transformViewAccordingToOrientation:toInterfaceOrientation];
}
- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{
_currentOrientation = [UIDevice currentDevice].orientation;
[self transformViewAccordingToOrientation:_currentOrientation];
}
// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (_currentOrientation !=interfaceOrientation);
}
what am i doing wrong?